3921030 has 48 divisors (see below), whose sum is σ = 10735920. Its totient is φ = 990144.

The previous prime is 3921023. The next prime is 3921037. The reversal of 3921030 is 301293.

It is an interprime number because it is at equal distance from previous prime (3921023) and next prime (3921037).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3920994 and 3921012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3921037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 564 + ... + 2856.

It is an arithmetic number, because the mean of its divisors is an integer number (223665).

Almost surely, 2^3921030 is an apocalyptic number.

3921030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3921030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5367960).

3921030 is an abundant number, since it is smaller than the sum of its proper divisors (6814890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3921030 is a wasteful number, since it uses less digits than its factorization.

3921030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2325 (or 2322 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 3921030 is about 1980.1590845182. The cubic root of 3921030 is about 157.6885119970.

The spelling of 3921030 in words is "three million, nine hundred twenty-one thousand, thirty".